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| author | Yonghong Song <yhs@fb.com> | 2020-09-30 22:13:39 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2020-10-01 18:38:50 +0200 |
| commit | d82a532a611572d85fd2610ec41b5c9e222931b6 (patch) | |
| tree | 97397fc70b916f554e8b39ff2ef8d790508c19a2 /kernel | |
| parent | a59cf619787e628b31c310367f869fde26c8ede1 (diff) | |
bpf: Fix "unresolved symbol" build error with resolve_btfids
Michal reported a build failure likes below:
BTFIDS vmlinux
FAILED unresolved symbol tcp_timewait_sock
make[1]: *** [/.../linux-5.9-rc7/Makefile:1176: vmlinux] Error 255
This error can be triggered when config has CONFIG_NET enabled
but CONFIG_INET disabled. In this case, there is no user of
istructs inet_timewait_sock and tcp_timewait_sock and hence
vmlinux BTF types are not generated for these two structures.
To fix the problem, let us force BTF generation for these two
structures with BTF_TYPE_EMIT.
Fixes: fce557bcef11 ("bpf: Make btf_sock_ids global")
Reported-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/20201001051339.2549085-1-yhs@fb.com
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions